When HOB contains a system memory resource which is above
4GB, the (UINTN) typecast truncates the high-32 bits.
It causes a memory range above 4GB be used by CpuMpPei
code as the waking up buffer.
The patch fixes this issue by using UINT64 type.
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Ruiyu Ni <ruiyu...@intel.com>
Cc: Eric Dong <eric.d...@intel.com>
Cc: Star Zeng <star.z...@intel.com>
---
UefiCpuPkg/Library/MpInitLib/PeiMpLib.c | 23 +++++++++++------------
1 file changed, 11 insertions(+), 12 deletions(-)
diff --git a/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c
b/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c
index ad43bd33f5..791ae9db6e 100644
--- a/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/PeiMpLib.c
@@ -1,7 +1,7 @@
/** @file
MP initialize support functions for PEI phase.
- Copyright (c) 2016 - 2017, Intel Corporation. All rights reserved.<BR>
+ Copyright (c) 2016 - 2018, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD
License
which accompanies this distribution. The full text of the license may be
found at
@@ -75,15 +75,15 @@ SaveCpuMpData (
**/
BOOLEAN
CheckOverlapWithAllocatedBuffer (
- IN UINTN WakeupBufferStart,
- IN UINTN WakeupBufferEnd
+ IN UINT64 WakeupBufferStart,
+ IN UINT64 WakeupBufferEnd
)
{
EFI_PEI_HOB_POINTERS Hob;
EFI_HOB_MEMORY_ALLOCATION *MemoryHob;
BOOLEAN Overlapped;
- UINTN MemoryStart;
- UINTN MemoryEnd;
+ UINT64 MemoryStart;
+ UINT64 MemoryEnd;
Overlapped = FALSE;
//
@@ -96,9 +96,8 @@ CheckOverlapWithAllocatedBuffer (
while (!END_OF_HOB_LIST (Hob)) {
if (Hob.Header->HobType == EFI_HOB_TYPE_MEMORY_ALLOCATION) {
MemoryHob = Hob.MemoryAllocation;
- MemoryStart = (UINTN) MemoryHob->AllocDescriptor.MemoryBaseAddress;
- MemoryEnd = (UINTN) (MemoryHob->AllocDescriptor.MemoryBaseAddress +
- MemoryHob->AllocDescriptor.MemoryLength);
+ MemoryStart = MemoryHob->AllocDescriptor.MemoryBaseAddress;
+ MemoryEnd = MemoryHob->AllocDescriptor.MemoryBaseAddress +
MemoryHob->AllocDescriptor.MemoryLength;
if (!((WakeupBufferStart >= MemoryEnd) || (WakeupBufferEnd <=
MemoryStart))) {
Overlapped = TRUE;
break;
@@ -123,8 +122,8 @@ GetWakeupBuffer (
)
{
EFI_PEI_HOB_POINTERS Hob;
- UINTN WakeupBufferStart;
- UINTN WakeupBufferEnd;
+ UINT64 WakeupBufferStart;
+ UINT64 WakeupBufferEnd;
WakeupBufferSize = (WakeupBufferSize + SIZE_4KB - 1) & ~(SIZE_4KB - 1);
@@ -149,7 +148,7 @@ GetWakeupBuffer (
//
// Need memory under 1MB to be collected here
//
- WakeupBufferEnd = (UINTN) (Hob.ResourceDescriptor->PhysicalStart +
Hob.ResourceDescriptor->ResourceLength);
+ WakeupBufferEnd = Hob.ResourceDescriptor->PhysicalStart +
Hob.ResourceDescriptor->ResourceLength;
if (WakeupBufferEnd > BASE_1MB) {
//
// Wakeup buffer should be under 1MB
@@ -174,7 +173,7 @@ GetWakeupBuffer (
}
DEBUG ((DEBUG_INFO, "WakeupBufferStart = %x, WakeupBufferSize =
%x\n",
WakeupBufferStart, WakeupBufferSize));
- return WakeupBufferStart;
+ return (UINTN)WakeupBufferStart;
}
}
}
--
2.15.1.windows.2
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